Holographic String Encoding


should be sent to Thomas Hannagan, Laboratoire de Sciences Cognitives et Psycholinguistique, EHESS/CNRS/DEC-ENS Ecole Normale Supérieure, 29 rue d'Ulm, 75005 Paris, France. E-mail: thomas.hannagan@ens.fr


In this article, we apply a special case of holographic representations to letter position coding. We translate different well-known schemes into this format, which uses distributed representations and supports constituent structure. We show that in addition to these brain-like characteristics, performances on a standard benchmark of behavioral effects are improved in the holographic format relative to the standard localist one. This notably occurs because of emerging properties in holographic codes, like transposition and edge effects, for which we give formal demonstrations. Finally, we outline the limits of the approach as well as its possible future extensions.